Safety razor



R. P. HARSHB'ERGER.

SAFETY RAZOR.

" APPLICATION FILED IAN. Is. 1919.

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SAFETY RAZOR.

APPLICATION Fl-LED JAN. 13. 1919.

Patented Jan. M1922.

.www AWN@ WNV @RNA RUSSELL l?. HARSHBERGER, OF CHICAGO, ILLINOIS.

SAFETY nazca.

Specification of Letters Patent.

Patented Jan.. 24, 1222.

Application led January 13, 1919. Serial No. 270,852.

To all whom t may concer/n.'

Be it known that I, RUSSELL P. HARSH- BERGER, a citizen of the United States residing vat Chicago, in the county of v(look and State oflllinois, have invented certain new and useful Improvements in Safety Razors, of which the following is a specification.

This invention relates to limprovements in safety razors, and has for its object the production of a safety razor, the blade of which is given a vibratory movement when in operation. A further object of the invention is to provide suitable mechanism for vibrating the blade and for protecting such mechanism from injury from dirt and moisture. Other objects of the inventionwill be apparent from a consideration of the drawings and the following description.

Of the drawings Fig. 1 is an elevation of a razor with a portion of the casing broken away to disclose the operating mechanism thereof, which embodies the features of my' invention. Fig. 2 is a section of the vrazor and its mechanism along the line 2-2 of Fig. 1. Figs. 3 and 4 are end views of the razor, with portions broken away. Fig. 5 is a section along the line 5-5 of Fig. 3. Fig. 6 is a section along the line 6-6 of Fig. 2. And Fig. 7 is a section along the line 7 7 of Fig. 2. v

ln this particular case l have illustrated and described the razor with the blade set at an angle of about 600 with thevhandle; but it is to be understood that the invention applies to bladesV set at any ordinary or suitable angle. Also I have shown and described a spring motor for the power to be used in imparting to the blade its vibratory movement; but any suitable type of motor may be used for the purpose. In general,

the invention consists of a razor blade, slid.

ably supported on a suitable framework, which is vibrated by meansy of a cam or escapement wheel, which is operated by a series of gear wheels meshing lwith each other and transmitting the power `from a driving motor to the cam wheel. l prefer for the driving power a motor comprising a plurality of coil springs, operatively connected in seriesv with each other, and also connected to suitable means for putting the springs under tension.

rl`he operating mechanism of the device is enclosed in a suitable casing, which is sealed so as to prevent moisture or dirt working into theinterior of the casing and aecting injuriously the mechanism. The casing comprises in general a handle portion 10 which encloses the motor; also a portion 12 which encloses the gear wheelsV of the mechanism; and also the framework 13 which slidably supportsl the razor blade 14.

rlhe motor comprises a series of coil springs 11, each of `which is connected in any suitable manner by its outer end to the outer wall 15 of a cup 16, and by its inner end to the projecting hub 17 of the adjacent cup. The outer spring of the series, however, is connected to the hub 18, while the inner spring is connected tothe shaft 28. A spur wheel 19 is fixed to the hub 18 and meshes with a spur wheel 20, which, in turn, meshes with an internal gear wheel 21 fixed to the-winding knob 22. rl`he knob is rotatably` mounted on the end of the handle 10 of the casing. A pawl 23 is pivoted within the knobby means of a pin 24 passing through a disk 25. The free end of the pawl 'coacts with an internal ratchet wheel 26 which is fixed to the knob. A spring 27 holds the free end of the pawl against the ratchet teeth,

A consideration of this mechanism will show that, as thevknob is rotated, the spur wheels 19 and '20 will be rotated, and the wheel 19 rotating the hub 18 will wind up the first spring, the pawl preventing the knob from rotating backwardly when the knob is released by the hand. As the rotation of the knob continues the first spring will impart rotation to the hub of the second spring, and so on until each of the springs is thus put under tension.- And, the cup 16 of the inner spring, being fixed to the shaft 28, this shaft will tend to rotate under the tension of the springs,

The rotation of the shaft 28 will, in turn, rotate the beveled gears 29 and 30, and also the spur wheel 31, fixed to the beveled gear 30. The wheel 31 in turn will rotate the spur wheel 32,the shaft 33, to which the spur wheel 32 is fixed, and thus the gear wheel 34, also fixed to the shaft. The gear wheel 34 will rotate the spur wheel 35, which is'fxed to the cam disk 36. Hence, whenever the knob 22 is rotated, so as to impart tension to the springs, there will be a tendency for the cam disk 3,6 to be rotated also.

In my copending application Serial Number 143,810, filed January 22, 1917, l have illustrated and described a safety razor cornlos blade 14 is slidably mounted in the casing frame 13 in any suitable manner, for example lby means of the openings 37 throngh which project the posts 38.; the posts being fixed to the frame. J ournaled in the caslng is a rock pin 40, which transmits the vibratory movement from the cam disk 36 to the razor blade. Fixed to the inner end of this I pin are projecting arms 41 which have,` at

their outer ends, rollers or cam wheels 42; the distance between these cam wheels being such that, when one of the wheels 1s in. a depression 43 of the cam disk periphery, the other .wheel will be a slight distance beyond the opposite projection 44 of the cam disk; so that the cam disk will be able to rock the pin 40 by alternately forcing the cam.

wheels out of the depressions and over the projections. 4 the casing, and has fixed to its outer end an eccentric 45 which projects through an opening 46 in the blade 14. Hence, as the pin 40 is rocked, the blade 14 will be vibrated in a path parallel with the cutting' edge. The blade is held in position on the posts 38 by a guard 47, which is hinged to the frame piece 48 and is spaced therefrom bythe posts 38, and is held in place by the clip 49, fixed to the guard land normally claspingb the frame of the. casing. In this way the lade may move freely between the guard and. the frame. Hence, as the knob is rotated, or at any time when the springs are under tension, the train of. gear wheels, transmitting the power of the springs 'to the cam disk, and thus rotating the disk, will cause the rock pin to rock and the razor blade to vibrate.

As stated the mechanism is entirely enclosed in the casing, but, in order to allow access to the mechanism, an opening 50 is formed in the casing which is closed by means of the plate 51. This plate is held in place by means of screws 52 and the pin 53 l which also serves the purpose of rotatably supporting the wheels 30 and 31. By removing the screws 52 and the pin 53, the plate 51 may be removed, and all of the internal mechanism, with the exception of the lspring motor, is easily accessible and may be removed if desired.

The handle- 10 of the casing is sealed by means of a gasket 55. In assembling the device, before the plug 56 of the knob 22 is screwed into the inner wall-of the knob, the handle 10 of the casing is passed through the gasket and the'gasket is placed against The pin 4() projects out ofV -tively to the handle, imparting rotary movement to the spur wheel 19 and to the hubs of the springs without allowing moisture to pass into the casing.

In order to control the speed of operation of the razor blade, I provide an adjustable brake which comprises any suitable form of shoe, for example the leather shoe 65. This shoe is adapted to be 4pressed against the surface of the cam disk 36. With this in view, the shoe is fixed to the spring plate 66, which has elongated openings 67 through which pass the screws 52. Threaded in the wall of the casing is a pin 68 which projects outwardly and inwardly. The outer end is provided with any suitable means for rotating the pin, such as the slot 70, so as to adjust the position of the inner end. The inner end is adapted to come in contact with the central portion of the spring plate 66, so as to press the plate, and hence the shoe, against the cam disk 36, thereby retarding the speed of the disk as much as may be desired. On the inner end of the pin 68is a flange 69 which prevents the pin from being removed without opening the casing. v

By these various means I have provided, what may be called, a self-contained mechanically -operated vibrating razor. Substantially all of the operating mechanism, including the motor, is entirely enclosed in the casing; and the motor is of such a nature that it receives and stores energy, the system being independent of all other apparatus, such as flexible shafts, electric wires, or the like. At the same time the motor, upon receiving its energy, is of such a nature that it transmits the energy to the blade, and suitably operates the blade for means comprising a rotatably mounted vdisk having a cam-wheel runway on its peripha .reasonable length of time before the cony ery, an arm extending from the inner end of said member, the outer portion of said arm coacting with said runway, a motor mounted in said casing, means operatively connecting said motor with said cam wheel, and means mounted on said casing and out side thereof for energizing said motor.

2. A safety razor comprising a casing, a blade slidably mounted on the outside of said casing, a member rotatably mounted in the wall of said casing and extending outf wardly and inwardly therefrom, means operatively connectin said member with said blade, means in sai casing operatively connected with said member for rocking said member, said means comprising a rotatably mounted plate, the periphery of said plate being non-circular, means operatively connected with si id member and coacting'with the periphery of said plate, and means for operating sald plate.

3. A safety razor comprising a frame, a blade -slidably mounted in said frame, a rock pin mounted in said frame and operatively connected -with Said blade, means for rocking said pin mounted in said frame comprising a disk rotatably mounted in said frame, lsald disk having a non-circular periphery, and means operatively connected to said pin, said means coacting with the periphery of said disk.

4:. A safet razor comprising a frame, a

blade slidab y mounted in said frame, la rock pin mounted in said frame and operatively connected with said blade, and means for rocking said pin mounted in said frame comprising a disk rotatably mounted in said frame, said disk having non-circular periphery, means operatively connected to said pin, said means coacting with the periphery L reciprocations of said blade, said latter means comprising a spring member, a shoe fixed to said member adJacent one of the moving parts of said operatively connecting means, and a screw extending through said frame and arranged to force said shoe with varying pressures against said moving part.

6. In a safety razor, a frame, a blade slidably mounted on said frame, a rocking device rotatably mounted in the wall of said frame operatively connected to said blade, a cam wheel, a motor operatively connected to said wheel, a yoke mounted to -follow the cams 0n said cam wheel and operatively connected to said rocking device thereby reciprocating said blade in reference to said frame.

In testimony whereof, I hereunto set my hand.

RUSSELL P. HARSHBERGER. 

